You know that you are tempting me to make, and eat things that aren't very good for me at all, don't you.
For an amazing cake of the same nature, make two maple cakes. Cut each into three layers, each layer sitting on a thin, plastic sheet. Make a maple-buttercream frosting, with chopped walnuts mixed throughout. Spread a layer of frosting between each layer before topping with the next. Finish with the forsting spread over the top and onto the sides. Sprinkle with chopped walnuts and maple sugar.